Sudan's army takes control of the presidential palace, 2 years after war broke out / Sudan's military says it seized control of capital city from paramilitary / Will recapture of presidential palace change course of Sudan war? / Sudan's army seizes control of central bank amid steady gains in Khartoum / Sudan's military says it has seized control of presidential palace / Russia concerned over events in Sudan, wants to assist in stabilizing situation -- Lavrov / Sudan army plans new government as it advances in capital / New US sanctions target Sudan's warring military leader / Sudan's descent into chaos demands urgent global action / U.S. says Sudanese rebel force has committed genocide and imposes sanctions on the group's leaders